New Year Sale Special - Limited Time 70% Discount Offer - Ends in 0d 00h 00m 00s - Coupon code: sntaclus

examout.co

How are blocks of data “chained” together to ensure the integrity of transactions?

A.

The hash of the previous block is written to the header of the current block

B.

The ID of the previous block is stored in the current block

C.

A public key is stored in each block for data decryption

D.

The hash of the genesis block is kept in all block headers

In regard to blockchain, complete autonomy, transparency, and decentralization:

A.

Are the aim of all distributed banking and financial institutions

B.

Will never be achievable due to technology limitations

C.

Are highly valuable in some use cases and completely undesirable in other use cases

D.

Are the foundation principles that allow blockchain to operate successfully

Which of the following scenarios and databases is least suited to be utilized by a blockchain solution?

A.

Scenario: Law enforcement system; Dataset: Criminal Arrests, Warrants for Arrest, Conviction Date

B.

Scenario: An Email campaign service; Dataset: Recipient Email, From Email; Subject, Body

C.

Scenario: A family filter wifi router; Dataset: Websites Visited, Websites Blocked, Download History

D.

Scenario: Credit score app; Dataset: Credit Score, Hard Inquiries; Collections, Date Removed, Date Added

Gas has multiple associated terms with it: Gas Prices, Gas Cost, Gas Limit, and Gas Fees. The principle behind Gas is to have a stable value for how much a transaction or computation costs on the Ethereum network.

Which is considered to be the static value for how much a computation costs in terms of Gas?

A.

Price

B.

Fee

C.

Cost

D.

Limit

__________ is a real-time gross settlement system (RTGS), currency exchange and remittance network by __________

A.

Ripple, Ripple

B.

Ripple, JP Morgan

C.

XRP, Ripple

D.

Ripple, XRP

A Smart Contract needs to check the daily closing price of a stock, in order to determine how to act. The proper way to do this is with the use of ______________.

A.

Oracles

B.

Wizards

C.

Data rabbits

D.

All of the above

Consider the following scenario: Due to consistent inaccuracies and outdated real estate listings, a residential real estate company wants to build a blockchain solution that accurately depicts which homes (assets) are available for purchase across all countries/provinces. All available homes should be publicly viewable by the general consumer audience, but certain details of the home, such as history of maintenance, should only be viewable by licensed real estate professionals.

Which architecture would best solve the product need?

A.

Public data hosted on a public blockchain, Privileged data security hoisted on a private database

B.

The entire solution built on a private blockchain with proper permissions for both public and privileged data

C.

Public and privileged data on hybrid blockchain will Proof of Stake consensus

D.

Public data hosted on a public blockchain; Privileged data hosted on a private blockchain

What does the acronym DAO represent?

A.

Distributed Autonomous Operations

B.

Distributed Anonymous Organization

C.

Distributed Anonymous Operations

D.

Decentralized Autonomous Organization

If a product’s requirements call for public autonomous on-chain code, only using open source code, using cryptographic tokens, and allowing its users the ability to earn tokens, this product should be launched on the Ethereum blockchain.

A.

FALSE

B.

TRUE

In Ethereum how is the block difficulty determined in Ethereum?

A.

The Block Difficulty increases when the time between mined blocks is below 10 seconds, while it decreases when the time is above 20 seconds.

B.

The Block Difficulty is determined by the Ethereum Committee every fortnight to reflect the average amount of transaction and it cannot be influenced by the network itself.

C.

The Block Difficulty increases when the time between mined blocks is below 20 seconds, while it decreases when the tie is above 60 seconds.